Metal-basket corrugator.



' F. D. TELLIN. METAL BASKET CORRUGATOR.

APPLICATlON min APR. 8, 1918.

1,275,497, Patented Aug. 13,1918.

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F. D. TELLIN.

METAL BASKET CORRUGATOR.

APPLICATION FILED APR. 8. 1918.

1,275,497. Patented .13,1918.

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APPLICATION FILED APR. 8. 1918.

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UNITED STATES ATE T OFFICE.

FRANK DANIEIi TELLIN, or knLoNA, Iowa.

METAL-BASKET 'CORRUGATORf Specification of Letters Patent.

Application fiiean ns, 191s. Seria1No.2 2?,19 8.

To all whom it may concern:

Be it known that I, F RANK DANIEL-TEL- LIN, a citizen of the United States, residing at Kalona, in the county of lVashington and V which is curved inwardly by excess of cor- 1 method is carried into effect.

rugation, and thebasket is both shaped and stiffened thereby. v

This invention involves a novel method of procedure'in the formation of the basket, and improved mechanism whereby such The invention is fully disclosed in the description and claims following, reference 7 which:

being had to the accompanying drawing, in

Figure l is a side elevationof a machine embodying my invention, partly in section,

' a the section of the base being l'l; theforming die and connected parts being (p -a and the middle of the die-supporting table, b -b p v Fig. 2 is; a plan view ofthe die, forming levers and lever-actuating spider, below the line 22. Fig-3 is a front view showing the lower portion of the main frame, the- 7 driving and feed mechanism, and the basket blank in position for formation, but/ with. the forming parts removed. Fig. 4: is a side view, partly in mid-section, illustrating a modified type of machine, and provided witha turn-table for a double set ,of form-- ving mechanisms, whereby the operator may remove the finished product and supply a new blank while the forming machineis; in operation. v I In the drawing, the numeral 5 denotesv the main frame of a press of a familiar type,vhaving a base 6, standard 7, over-' hanging arm 8 and a support for the forming die to be described presently. The rain 9, which carries a suitable device for actu ating the corrugating levers 10, is here shown connecting by links 11 with the-mainoperatin lever 12, pivote d at. 13, and con- 'necting ya rod-14 with ,a crank This;

is attached to a shaft 16 provided witha large gear 17 meshing with a pinion l8 mounted loosely on a shaft 19 driven by a belt-wheel or pulley '20., The pinion forms l half of a clutch, the other half 21 of which is splined slidably on the'shaft. To this is connected a bell-crank lever 22, provided with a clutch-releasing spring 23. l A ifootlever 2 lcooperating with the bell-crank lever serves to engage the clutch. \Vhen in action the ram has a reciprocating vertlcal mot1on, as w1ll be evldent.

-The blank 25 out of which the basket is formed is first formed as a simple cylinder, open at both ends, and usually of galvanized sheet steel. This may be formed to approximately hemispherical shape at one end by corrugating lengthwise of the cylinder, the corrugations deepening toward the edge thereof, provided such corrugations be made over a suitable :form and by means of a properly formed corrugating instrument. This has usually been done by the successive formation of single corrugations. Myimproved method employs a gang of corruga- 'tors equal to the whole series of corrugations,

and the impressing of the whole series by a succession of steps in the position oftthe blank, whereby the corrugations are gradually deepened, and increasingly toward the end of said blank. j 7

Referring to Figs. 1, 2 and 4, the numeral 26 denotes the die or matrix over which the basket is formed. This is shown asa cylindrical body whose open lower end rests on the table 27 ,(Fig. 1-) 01"59 (Fig. 4). 'Its Patented Aufg.13,191s.

upper end is curved to approximately seml- V circular form, and is provided with a series of radial grooves, as best shown in Figs. 2 and 4. The matrix is groovedat 29 to receive the grippers of a feed device to bedescribed presently. Outside the matrix is mounted a ring 30, in theradially slotted upperpart ofwhich is mounted the gang of corrugating levers, whose operating edges 32 coincide with the curvature of the matrix grooves, it being un-' derstood that these edges are I somewhat rounded, and are thin enough to enter the grooves together with the; crimped sheet metal on' each side. It will be evident that of these levers as they are rocked from the the corrugations are formed by the pinch I positions shown i1rFigs. .1 and 4 to a posiv tion not shown, closed down over the top of the matrix. This movement of the levers may be eflected byeitherpulling upon the be a three-armed cross-bar or spider, so as the yoke.

to prevent any possible tipping of the ring.

The corrugations are formed by a series of crimping actions beginning at the upper edge of the blank. After each pressing impulse the blank is advanced upwardly, and

at the next succeeding pressure the grooves are deepened and somewhat curved inwardly, until finally the form is substantially as shown in Fig. 4 at the left. The

feed mechanism for this purpose is shown fully in Figs. 1 and 3, and in modified form in Fig. 4. The former will be first described. A yoke 39. is provided at its upper ends with gripping aws 40, which when partially closed hold the edge of the blank between them. This closure is effected by the constriction of the passage 29, which is enlarged at 29 to allow the grippers to open to re ceive the blank. The tension on the grippers in this groove may be sufficient to sup port the yoke by friction, in which case no detent pawl is needed. The upward movement step by step is effected by a ratchet-bar 41 connecting with a lever 42 pivoted at 43, and at its other end connecting by a linkrod 44 with. one of the corrugating levers.

It will be seen that the pawl retreats as the corrugating levers move to crimping position, and vice versa. In its upward movement the teeth of the pawl successively engage a stop-plate 45 mounted slidably on a vertical guide 46, the platebeing held to working position by a keeper 47 attached to the yoke. To this guide is attached a crank 48, which is pushed positively to position to disengage the plate by a rod 49 connecting with the bell-crank lever above described. It is held yieldably to engaging position by a spring 50. To forcibly draw down the yoke from its extreme upward position to th initial position shown, a link-rod '51 con nects the yoke with a foot-lever 52. In Fig. 4 is shown a detent pawl 53 provided with a tail 54, which serves for engagement by gravity with notched plate 55 attached to W hen the turn-table is turned, this pawl is automatically disengaged by a cam 56, permitting the yoke to drop by gravity, if the grippers will permit it to do so, or to be drawn down forcibly by the foot lever, as just described.

merely turning the turn-table.

turn-table carrying a pair of forming mech anisms. A bracket 58 serves as a support for the inner end of the turn-table 59. The turn-table is held to accurate working posi .tion by a dog 60 pivoted to the bracket, and connecting by a link-rod 61 with a hand lever 62. The feed mechanism is in the main 7 similar to that above described, but is made to disengage, so as to allow the turning of the turn-table. The ratchet-bar has an open connection at 63 with the lever The linkrod 44 has also an open connection with the corrugating lever at 64, embracing a little more than half of a circular knob 65 on said lever. The link-rod is held to proper registering position by a spring 66. This, as will be evident, allows for the engagement and disengagement of the feed mechanisms by supports the ratchet-bar at its lowermost position.

The-operation of the machine is briefly described as follows:

With the machine inthe position shown, the operator places the cylindrical blank in position, its upper end projecting somewhat into the corrugating zone. He then starts the machine by depressing the starting lever, and the same operates continuously until the lever is released. Succeeding the pressing action, the feed mechanism advances the cylinder upwardly one notch of the ratchet, and the operation is repeated, until the cylinder or blank has reached to upward limit of its movement. The machine is then topped by releasing the starting lever. This also disengages the feed, and permits the grip pins being stripped from the lower edge of the corrugated blank, which may then be lifted off the matrix and replaced by a new blank.

No attempt has been made herein to represent the machine with mechanical exactness, but the main principles and operative features of the machine are clearly indicated. In practice the number of-corrugations in an ordinary-bushel basket is greater than herein shown, but this and other minor features of construction have been disregarded.

Having thus described my invention, 1 claim:

1. In a metal basket corrugating machine, a radially fluted matrix, a gang of coinciding corrugators, means to impart to them intermittent motion in and out of said flutes, and means adapted to hold a cylindrical blank in position around said matrix, and to advance it endwise intermittently, and be tween the strokes of the corrugators.

2. In a metal basket corrugating machine, a matrix having an approximately hemispherical forming surface, fluted radially,

A stop-pin flutes a support therefor, means adapted to actuate said corrugators, means adapted to hold a cylindrical blank, and feed mechanism to advance the blank'step by step toward the operating ends of the corrugators.

'3. In a metal basket corrugating machine, a radially fluted matrix, a support therefor, a surrounding, lever-carrying ring spaced away from the matrix, a gang of corrugators pivotally mounted thereon, means adapted to actuate said corrugators, grippers to engage the lower edges of a cylindrical blank, and feed mechanism adapted to advance said grippers and blank between crimping impulses of the corrugators step by step, and successively widen the crimped zone.

I. In a metal basket corrugating machine, a matrix having radial flutes converging toward one end, a gang of coinciding corrugators, means to impart intermittent radial movement thereto, and feed mechanism to advance the basket blank intermittently between the strokes of the corrugators, and a less distance than the space covered by their Working faces, whereby the impressions of the corrugators are made to progressively overlap.

5. In a metal basket corrugating machine, combined with a matrix and corrugators,

substantially as described, a feed mechanism 7 comprising grippers adapted to seize the end having a matrix and corrugators substantially as described, a feed deviceprovided with grippers to hold one end of the basket blank, means adapted to close said grippers on the metal and to support the feeding device frictionally, means to advance the feed device step by step, and means adapted to forcibly strip the grippers from the blank when in its advanced position.

7. In a metal basket corrugating machine having a matrix radially fluted and a gang of cooperating pivoted levers surrounding the matrix a feed mechanism adapted to advancethe basket blank step by step, and a connection of said feed mechanism with one of the corrugating levers.

In testimony whereof I allix my signature in presence of two-witnesses.

FRANK DANIEL TELLIN.

Witnesses:

A. H. PAPE, C. M. JELLEFF.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner 0! Patents,

Washington, 11.0. 

